Nvidia PureVideo

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PureVideo is the Nvidia's hardware SIP core that performs video decoding. PureVideo is integrated into some of the Nvidia GPUs, and it supports hardware decoding of H.264 and VC-1 video codec standards. PureVideo occupies a considerable amount of a GPU's die surface and should not to be confused with Nvidia NVENC.[1]

Operating system support[edit]

The PureVideo SIP core needs to be supported by the device driver, which provides one or more interfaces such as VDPAU, VAAPI or DXVA. One of these interfaces is then used by end-user software, for example VLC media player or GStreamer, to access the PureVideo hardware and make use of it.

Nvidia's proprietary device driver is available for multiple operating systems and support for PureVideo has been added to it. Additionally, a free device driver is available, which also supports the PureVideo hardware.

Linux[edit]

Support for PureVideo has been available in Nvidia's proprietary driver version 180 since October 2008 through VDPAU.[2] Since April 2013[citation needed] nouveau also supports PureVideo hardware and provides access to it through VDPAU and partly through XvMC.[3]

Microsoft Windows[edit]

All[citation needed] software HD DVD/Blu-ray players, as well as most software DVD players, are PureVideo-enabled. Microsoft's Windows Media Player and Windows Media Center also support Nvidia's PureVideo. Nvidia also sells its own PureVideo decoder software (which is a source of confusion, as Nvidia's decoder is not required and not used by third-party players), which serves as a DVD player with advanced post-processing capabilities.

OS X[edit]

OS X was sold with Nvidia hardware, so support is probably available.

PureVideo HD[edit]

PureVideo HD (see "naming confusions" below) is a label which identifies Nvidia graphics boards certified for HD DVD and Blu-ray Disc playback, to comply with the requirements for playing Blu-ray/HD DVDs on PC:

  1. End-to-end encryption (HDCP) for digital-displays (DVI-D/HDMI)
  2. Realtime decoding of H.264 high-profile L4.1, VC-1 Advanced Profile L3, and MPEG-2 MP@HL (1080p30) decoding @ 40 Mbit/s
  3. Realtime dual-video stream decoding for HD DVD/Blu-ray Picture-in-Picture (primary video @ 1080p, secondary video @ 480p)

The first generation PureVideo HD[edit]

The original PureVideo engine was introduced with the GeForce 6 series. Based on the GeForce FX's video-engine (VPE), PureVideo re-used the MPEG-1/MPEG-2 decoding pipeline, and improved the quality of deinterlacing and overlay-resizing. Compatibility with DirectX 9's VMR9 renderer was also improved. Other VPE features, such as the MPEG-1/MPEG-2 decoding pipeline were left unchanged. Nvidia's press material cited hardware acceleration for VC-1 and H.264 video, but these features were not present at launch.

Starting with the release of the GeForce 6600, PureVideo added hardware acceleration for VC-1 and H.264 video, though the level of acceleration is limited when benchmarked side by side with MPEG-2 video. VPE (and PureVideo) offloads the MPEG-2 pipeline starting from the inverse discrete cosine transform leaving the CPU to perform the initial run-length decoding, variable-length decoding, and inverse quantization;[4] whereas first-generation PureVideo offered limited VC-1 assistance (motion compensation and post processing).

The first generation PureVideo HD is sometimes called "PureVideo HD 1" or VP1, although this is not an official Nvidia designation.

The second generation PureVideo HD[edit]

Starting with the G84/G86 GPUs (Tesla (microarchitecture)) (sold as the GeForce 8400/8500/8600 series), Nvidia substantially re-designed the H.264 decoding block inside its GPUs. The second generation PureVideo HD added a dedicated bitstream processor (BSP) and enhanced video processor, which enabled the GPU to completely offload the H.264-decoding pipeline. VC-1 acceleration was also improved, with PureVideo HD now able to offload more of VC-1-decoding pipeline's backend (inverse discrete cosine transform (iDCT) and motion compensation stages). The frontend (bitstream) pipeline is still decoded by the host CPU.[5][6] The second generation PureVideo HD enabled mainstream PCs to play HD DVD and Blu-ray movies, as the majority of the processing-intenstive video-decoding was now offloaded to the GPU.

The second generation PureVideo HD is sometimes called "PureVideo HD 2" or VP2, although this is not an official Nvidia designation. It corresponds to Nvidia Feature Set A (or "VDPAU Feature Set A").

The third generation PureVideo HD[edit]

This implementation of PureVideo HD, VP3 added entropy hardware to offload VC-1 bitstream decoding with the G98 GPU (sold as GeForce 8400GS),[7] as well as additional minor enhancements for the MPEG-2 decoding block. The functionality of the H.264-decoding pipeline was left unchanged. In essence, VP3 offers complete hardware-decoding for all 3 video codecs of the Blu-ray Disc format: MPEG-2, VC-1, and H.264.

All third generation PureVideo hardware (G98, MCP77, MCP78, MCP79MX, MCP7A) cannot decode H.264 for the following horizontal resolutions: 769–784, 849–864, 929–944, 1009–1024, 1793–1808, 1873–1888, 1953–1968 and 2033–2048 pixel[8]

The third generation PureVideo HD is sometimes called "PureVideo HD 3" or VP3, although this is not an official Nvidia designation. It corresponds to Nvidia Feature Set B (or "VDPAU Feature Set B").

The fourth generation PureVideo HD[edit]

This implementation of PureVideo HD, VP4 added hardware to offload MPEG-4 Advanced Simple Profile (the compression format implemented by original DivX and Xvid) bitstream decoding with the GT215, GT216 and GT218 GPUs (sold as GeForce GT 240, GeForce GT 220 and GeForce 210/G210, respectively).[9] The H.264-decoder no longer suffers the framesize restrictions of VP3, and adds hardware-acceleration for MVC, a H.264 extension used on 3D Blu-ray discs. MVC acceleration is OS dependent: it is fully supported in Microsoft Windows through the Microsoft DXVA and Nvidia CUDA APIs, but is not supported through Nvidia's VDPAU API.

The fourth generation PureVideo HD is sometimes called "PureVideo HD 4" or VP4, although this is not an official Nvidia designation. It corresponds to Nvidia Feature Set C (or "VDPAU Feature Set C").

The fifth generation PureVideo HD[edit]

The fifth generation of PureVideo HD, introduced with the GeForce GT 520 (Fermi (microarchitecture)) and also included in the Nvidia GeForce 600/700 (Kepler (microarchitecture)) series GPUs has significantly improved performance when decoding H.264.[10] It is also capable of decoding 2160p 4K Ultra-High Definition (UHD) resolution videos at 3840 × 2160 pixels (doubling the 1080p Full High Definition standard in both the vertical and horizontal dimensions) and, depending on the driver and the used codec, higher resolutions of up to 4032 × 4080 pixels.

The fifth generation PureVideo HD is sometimes called "PureVideo HD 5" or "VP5", although this is not an official Nvidia designation. This generation of PureVideo HD corresponds to Nvidia Feature Set D (or "VDPAU Feature Set D").

The sixth generation PureVideo HD[edit]

The sixth generation of PureVideo HD, introduced with the Maxwell (microarchitecture), e.g. in the GeForce GTX 750/GTX 750 Ti (GM107) and also included in the Nvidia GeForce 900 (Maxwell) series GPUs has significantly improved performance when decoding H.264 and MPEG-2. It is also capable of decoding Digital Cinema Initiatives (DCI) 4K resolution videos at 4096 × 2160 pixels and, depending on the driver and the used codec, higher resolutions of up to 4096 × 4096 pixels. GPUs with Feature Set E support an enhanced error concealment mode which provides more robust error handling when decoding corrupted video streams.

The sixth generation PureVideo HD is sometimes called "PureVideo HD 6" or "VP6", although this is not an official Nvidia designation. This generation of PureVideo HD corresponds to Nvidia Feature Set E (or "VDPAU Feature Set E").

Naming confusion[edit]

Because the introduction and subsequent rollout of PureVideo technology was not synchronized with Nvidia's GPU release schedule, the exact capabilities of PureVideo technology and their supported Nvidia GPUs led to a considerable customer confusion. The first generation PureVideo GPUs (GeForce 6 series) spanned a wide range of capabilities. On the low-end of GeForce 6 series (6200), PureVideo was limited to standard-definition content (720×576). The mainstream and high-end of the GeForce 6 series was split between older products (6800 GT) which did not accelerate H.264/VC-1 at all, and newer products (6600 GT) with added VC-1/H.264 offloading capability.

In 2006, PureVideo HD was formally introduced with the launch of the GeForce 7900, which had the first generation PureVideo HD. In 2007, when the second generation PureVideo HD (VP2) hardware launched with the Geforce 8500 GT/8600 GT/8600 GTS, Nvidia expanded Purevideo HD to include both the first generation (retroactively called "PureVideo HD 1" or VP1) GPUs (Geforce 7900/8800 GTX) and newer VP2 GPUs. This led to a confusing product portfolio containing GPUs from two distinctly different generational capabilities: the newer VP2 based cores (Geforce 8500 GT/8600 GT/8600 GTS/8800 GT) and other older PureVideo HD 1 based cores (Geforce 7900/G80).

Nvidia claims that all GPUs carrying the PureVideo HD label fully support Blu-ray/HD DVD playback with the proper system components. For H.264/AVC content, VP1 offers markedly inferior acceleration compared to newer GPUs, placing a much greater burden on the host CPU. However, a sufficiently fast host CPU can play Blu-ray without any hardware assistance whatsoever.

Table of GPUs containing a PureVideo SIP block[edit]

Board Name Core Type PureVideo HD VDPAU feature set First Release Date Notes
GeForce 6 series NV4x VP1 Not Supported NV40-based models of the 6800 do not accelerate VC-1/H.264
GeForce 7 series G7x VP1 Not Supported -
GeForce 8200, 8300 C77 VP3 B January 2008 Not suitable for running CUDA
GeForce 8400 GS Rev. 2 G98 VP3[11] B December 2007 Earlier cards use G86 core type without VP3 support
GeForce 8400 GS, 8500 GT G86 VP2 A April 2007 -
GeForce 8600 GT, 8600 GTS G84 VP2 A April 2007 -
GeForce 8800 Ultra, 8800 GTX, 8800 GTS (320/640 MB) G80 VP1 Not Supported November 2006 -
GeForce 9300M GS, 9300 GS, 9300 GE G98 VP3[11] B October 2008 Mostly found in laptops and on motherboards
GeForce 9400 GT, 9500 GT G96 VP2[12] A July 2008 -
GeForce 9600M GT G96 VP3[13] A[14] June 2008 -
GeForce 9600 GSO 512, 9600 GT G94 VP2 A February 2008 -
GeForce 8800 GS, 8800 GT, 8800 GTS (512 MB/1 GB), 9600 GSO, 9800 GT, 9800 GTX, 9800 GTX+, 9800 GX2, GTS 240 (OEM) G92 VP2 A October 2007 -
GeForce 205, 210/G210, 310, G210M, 305M, 310M, 8400 GS Rev. 3[15] GT218 VP4[9] C October 2009

(April 2009 for the 8400 GS Rev. 3[15])

Introduced decoding of MPEG-4 (Advanced) Simple Profile (Divx/Xvid)
GeForce GT 220, 315, GT 230M, GT 240M, GT 325M, GT 330M GT216 VP4[9] C October 2009 -
GeForce GT 240, GT 320, GT 340, GTS 250M, GTS 260M, GT 335M, GTS 350M, GTS 360M GT215 VP4 C November 2009 -
GeForce GTX 260, GTX 275, GTX 280, GTX 285, GTX 295 GT200 VP2 A June 2008 -
GeForce GT 420 OEM, GT 430, GT 440, GT 415M, GT 420M, GT 425M, GT 435M, GT525M, GT 540M, GT 550M, GT 620 (non-OEM), GT 630 (40 nm) GF108 VP4 C September 2010 -
GeForce GTS 450, GT 445M, GTX 460M, GT 555M GF106 VP4 C September 2010 -
GeForce GTX 460, GTX 470M, GTX 485M GF104 VP4 C July 2010 -
GeForce GTX 465, GTX 470, GTX 480, GTX 480M GF100 VP4 C March 2010 -
GeForce 410M, GT 520MX, 510, GT 520, GT 610, GT 620 (OEM) GF119 VP5 D April 2011 -
GeForce GT 620M, GT 625M, GT 710M, GT 720M, GT 820M GF117 VP5 D April 2011 Introduced 4K UHD video decoding
GeForce GTX 550 Ti, GTX 560M, GT 640 (OEM) GF116 VP4 C March 2011 -
GeForce GTX 560 Ti, GTX 570M, GTX 580M, GT 645 GF114 VP4 C January 2011 -
GeForce GTX 570, GTX 580, GTX 590 GF110 VP4 C November 2010 -
GeForce GT 630 (28 nm), GT 640 (non-OEM), GTX 650, GT 640M, GT 645M, GT 650M, GTX 660M, GT 740M, GT 745M, GT 750M, GT 755M GK107 VP5 D March 2012 -
GeForce GTX 650 Ti, GTX 660, GTX 670MX, GTX 675MX, GTX 760M, GTX 765M, GTX 770M GK106 VP5 D September 2012 -
GeForce GTX 660 (OEM), GTX 660 Ti, GTX 670, GTX 680, GTX 690, GTX 760, GTX 760 Ti, GTX 770, GTX 680M, GTX 680MX, GTX 775M, GTX 780M, GTX 860M, GTX 870M, GTX 880M GK104 VP5 D March 2012 -
GeForce GTX 780, GTX 780 Ti, GTX TITAN, GTX TITAN BLACK, GTX TITAN Z GK110 VP5 D February 2013 -
GeForce GT 630 rev. 2, GT 635, GT 640 rev. 2, GT 730M, GT 735M, GT 740M GK208 VP5 D April 2013 -
GeForce GTX 745, GTX 750, GTX 750 Ti, GTX 850M, GTX 860M GM107 VP6 E February 2014 Introduced DCI 4K video decoding
GeForce 830M, 840M GM108 VP6 E March 2014 -
GeForce GTX 970, GTX 980, GTX 970M, GTX 980M GM204 VP6 E September 2014 -
Ion, Ion-LE (first-generation Ion)[16] C79 VP3 B -
Ion 2 (next-generation Ion) GT218 VP4 C -

Nvidia VDPAU Feature Sets[edit]

Nvidia VDPAU Feature Sets[17] are different hardware generations of Nvidia GPU's supporting different levels of hardware decoding capabilities. For feature sets A, B and C, the maximum video width and height are 2048 pixels, minimum width and height 48 pixels, and all codecs are currently limited to a maximum of 8192 macroblocks (8190 for VC-1/WMV9). Partial acceleration means that VLD (bitstream) decoding is performed on the CPU, with the GPU only performing IDCT, motion compensation and deblocking. Complete acceleration means that the GPU performs all of VLD, IDCT, motion compensation and deblocking.

Feature Set A[edit]

Supports complete acceleration for H.264 and partial acceleration for MPEG-1, MPEG-2, VC-1/WMV9

Feature Set B[edit]

Supports complete acceleration for MPEG-1, MPEG-2, VC-1/WMV9 and H.264.
Note that all Feature Set B hardware cannot decode H.264 for the following widths: 769-784, 849-864, 929-944, 1009-1024, 1793-1808, 1873-1888, 1953-1968, 2033-2048 pixels.

Feature Set C[edit]

Supports complete acceleration for MPEG-1, MPEG-2, MPEG-4 Part 2 (a.k.a. MPEG-4 ASP), VC-1/WMV9 and H.264.
Global motion compensation and Data Partitioning are not supported for MPEG-4 Part 2.

Feature Set D[edit]

Similar to feature set C but added support for decoding H.264 with a resolution of up to 4032 × 4080 and MPEG-1/MPEG-2 with a resolution of up to 4032 × 4048 pixels.

Feature Set E[edit]

Similar to feature set D but added support for decoding H.264 with a resolution of up to 4096 × 4096 and MPEG-1/MPEG-2 with a resolution of up to 4080 × 4080 pixels. GPUs with VDPAU feature set E support an enhanced error concealment mode which provides more robust error handling when decoding corrupted video streams.

See also[edit]

Older Nvidia video decoding hardware technologies[edit]

References[edit]

  1. ^ http://www.pcper.com/reviews/Graphics-Cards/NVIDIA-GT200-Revealed-GeForce-GTX-280-and-GTX-260-Review/NVIDIA-GT200-Archite
  2. ^ "NVIDIA Driver Brings PureVideo Features To Linux". Phoronix. 2008-11-14. 
  3. ^ "Nouveau Video Acceleration". freedesktop.org. 
  4. ^ "PureVideo: Digital Home Theater Video Quality for Mainstream PCs with GeForce 6 and 7 GPUs" (PDF). NVIDIA. p. 9. Retrieved 2008-03-03. 
  5. ^ "PureVideo Support table" (PDF). NVIDIA. Retrieved 2007-09-27. 
  6. ^ "PureVideo HD Support table" (PDF). NVIDIA. Retrieved 2008-10-28. 
  7. ^ "G98 first review". Expreview. Retrieved 2008-12-04. 
  8. ^ "Implementation limits VDPAU decoder". Download.nvidia.com. 1970-01-01. Retrieved 2013-09-10. 
  9. ^ a b c "NVIDIA’s GeForce GT 220: 40nm and DX10.1 for the Low-End". AnandTech. Retrieved 2013-09-10. 
  10. ^ "AnandTech Portal | Discrete HTPC GPU Shootout". Anandtech.com. Retrieved 2013-09-10. 
  11. ^ a b "nV News Forums - View Single Post - VDPAU capablilities and generations?". Nvnews.net. Retrieved 2013-09-10. 
  12. ^ http://forums.nvidia.com/index.php?showtopic=74108
  13. ^ "NVIDIA GeForce 9600M GT - NotebookCheck.net Tech". Notebookcheck.net. 2013-01-16. Retrieved 2013-09-10. 
  14. ^ "Appendix A. Supported NVIDIA GPU Products". Us.download.nvidia.com. 2005-09-01. Retrieved 2013-09-10. 
  15. ^ a b "GeForce 8 Series - Wikipedia, the free encyclopedia". En.wikipedia.org. Retrieved 2013-09-10. 
  16. ^ "Specifications". NVIDIA. Retrieved 2013-09-10. 
  17. ^ "Appendix G. VDPAU Support". Http.download.nvidia.com. 2014-02-28. Retrieved 2014-03-03. 

External links[edit]